【摘要】 分析了厄尔尼诺与湖南洞庭湖区洪涝的统计相关和西太平洋副热带高压 (简称副高 )与 1998年洞庭湖区洪涝的关系 .结果表明 ,在厄尔尼诺次年洞庭湖区域出现洪涝的频率较大 ;副高异常是形成 1998年洞庭湖区洪涝的重要原因 .同时讨论了厄尔尼诺与副高之间的联系机制 ,说明前者能影响后者的变化 ,并分析了环流调整对强降水的影响更多还原

【Abstract】 The statistical relationship between El Nino and flooding in Dongting Lake region of Hunan was analysed.The results showed that flooding occurred in the year after El Nino year with great probability in above mentioned region.The relationship between subtropical high of west Pacific and flooding of this region in 1998 was studied.It was demonstrated that abnormality of the former is a major cause of formation of this flooding.Then mechanism between El Nino and subtropical high of west Pacific was discussed.It was pointed out that the former can affect the change of the latter.The influence of adjustment of atmosphere general circulation on strong precipitation of Dongting Lake region in summer of 1998 was also studied.更多还原